PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74889Cover Piston

Triumph Engine Control Systems Llc · NSN 2915-00-991-0968 · FSC 2915 · No Item Name Available
Verified by PartsTable
NSN 2915-00-991-0968 — this item is cataloged by the U.S. Government under National Stock Number 2915-00-991-0968. Primary manufacturer part number: 74889.
Features
  • Cover Piston — FSC 2915
  • 2 verified cross-references
  • Primary manufacturer: Triumph Engine Control Systems Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cover Piston, cataloged under National Stock Number 2915-00-991-0968, is classified within Federal Supply Class 2915 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Triumph Engine Control Systems Llc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameCover Piston
FSC / FSG2915 — No Item Name Available (FSG 29)
ManufacturersTriumph Engine Control Systems Llc (CAGE 11599)
Technical Specifications
ParameterValue
NSN2915-00-991-0968
Primary Part Number74889
Item NameCover Piston
FSC / FSG2915 / 29 — No Item Name Available
ManufacturerTriumph Engine Control Systems Llc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5815-00-126-802774889 INTERCHANGEABLE
Plate,teletypewriter Retractor
Telemechanics Inc
5340-00-213-215041181 INTERCHANGEABLE
Bracket,angle
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5133-00-228-1366 INTERCHANGEABLE
Drill,twist
5945-00-259-653274889 INTERCHANGEABLE
Relay,electromagnetic
Hamilton Sundstrand Corporation Dba Collins Aerospace
3030-00-528-4620 INTERCHANGEABLE
Belt,v
4820-01-141-516874890 PC 1 INTERCHANGEABLE
Disk,valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Cross-Reference Index
Part NumberManufacturer
41181 Triumph Engine Control Systems Llc (USA)
74889 PRIMARY Triumph Engine Control Systems Llc (USA)
Related Parts
5815-00-126-8027INTERCHANGEABLE
PLATE,TELETYPEWRITER RETRACTOR
74889
5340-00-213-2150INTERCHANGEABLE
BRACKET,ANGLE
41181
5133-00-228-1366INTERCHANGEABLE
DRILL,TWIST
5945-00-259-6532INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
74889
3030-00-528-4620INTERCHANGEABLE
BELT,V
4820-01-141-5168INTERCHANGEABLE
DISK,VALVE
74890 PC 1

Frequently Asked Questions

What is NSN 2915-00-991-0968?

NSN 2915-00-991-0968 is a Cover Piston, manufactured by Triumph Engine Control Systems Llc, classified under FSC 2915 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2915-00-991-0968?

NSN 2915-00-991-0968 has 2 cross-referenced part numbers: 41181 (Triumph Engine Control Systems Llc), 74889 (Triumph Engine Control Systems Llc).

What NSN replaces 2915-00-991-0968?

There are 6 known substitutes for 2915-00-991-0968: 5815-00-126-8027, 5340-00-213-2150, 5133-00-228-1366 and 3 more. Verify interchangeability with system specifications before substitution.

Is NSN 2915-00-991-0968 still in active supply?

NSN 2915-00-991-0968 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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